Electric controlling means



Oct. 13,1925- 1,556,831

C. W. WYMAN ELECTRIC CCNTROLLING MEANS Filed Nov. 25. 1921 5Sheets-Sheet l C W WYMAN BLSCTRIC CONTROLLING MEANS Filed Nov. 25. 19213 Sheets-Shoot 2 MME/mf .E .H n. V n@ P c. e O 9 0 Auv \|\W\ e i W QCA@m a @n @YQ NM1 1T iwi# W Q E m a Q a! l u L. .w .www Vu Q u u H 0a.13,1925. 1.556,831 C. W. WYMAN K ELECTRIC CONTROLLING MEANS Filed Nov.25. 1921 SSheets-Shaet 5 ign. 130g. 6.

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l H2M l l f y////// 03' Yy les I if v Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

CHARLES W. WYMAN, 0F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVANMACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

ELECTRIC CONTBOLLING MEANS.

Application tiled November 23, 1921.

To all whom t may concern.'

Be it known that I, CHARLES W. VVYMAN, a citizen of the United States,residing at Claremont, in the county or' Sullivan and State of NewHampshire, have invented certain new and useful Improvements in ElectricControlling Means, ot' which the following is a full, clear, and exactspecilication.

My invention relates to electric controlling means, and moreparticularly to controlling means for use in connection with miningmachines.

An object of my invention is to provide an improved controllingmechanism. Another object of my invention is to provide an improvedinterlocking controlling mecha nism. A further object of my invention isto provide an improved controlling mechanism permittiner the operationof the motor controlled thereby in opposite directions while preventingthe reversal of said motor except after the parts of the controllingmechanism have been returned to a predetermined posi'- tion and acontrolling member thereoitl has been manipulated in a predeterminedmanner. A still further object ot my invention is to provide an improvedcontrolling mechanism provided with improved means for preventing themovement ot' the con troller handle in a direction to ett'ect opera tionof the motor in a direction not desired. A still further object ot' myinvention is to provide improved manually controllable controllingmechanism for an electric motor comprising simultaneously controllablereversing and resistance controlling means and means tor preventing theoperation of said means in other than the desired manner. A stillfurther object ot my invention is to provide improved means forcontrolling a mining machine motor having an interlock with the currentsupply or connector plug whereby the latter cannot be inscrteed orwithdrawn except with the controller locked in off position.

In the accompanying drawings I have shown for purposes of illustrationone torni which my invention may assume in practice, together with twoillustrations ot possible adaptations thereof.

Serial No. 517,621.

In these drawings,

Fig. l is a plan View with parts broken away ot a mining machine of thewell known longwall type provided with the illustrative form ot myimproved controlling system.

Fig. 2 is a plan view of a portion of the machine shown in F 1 withparts broken away and on an enlarged scale.

Fig. 3 is a detail ot' the connector interlock.

Fig. 4 is a side elevation with parts removed of the improved controllermechanism in its illustrative form and also showing certain ot thecontrol elements in elevation or in dotted lines. V

Figs. 5 and 6 are respectively views in vertical transverse section onthe lines 5 5 and 6 6 of Fig. 4.

Figs. 7 and 8 are wiring diagrams for D. C. and A. C. motors.

Fig. 9 is a detail section on the line 9-9 o1 Fig. 5.

In the illustrative torni ot' my invention I have shown the same adaptedfor use with a D. C. motor, but it will be understood that with a simplechang-e in the wiring connections as illustrated in Fig. 8 and avariation in the number, relative position, and dimensions ot thecontroller arms, this mechanism may be equally well applied toalternating current motors.

In the illustrative embodiment thereof my improved controlling mechanismis arranged upon a mining machine having a main trame 1 in which thereis mounted a motor 2 (shown in dotted lines in Fig. l) adapted to drivea cutter chain 3 on a cutter bar 4 and likewise adapted in a well knownmanner to ellect feeding movement ot the machine by means ot sprockets5, 6, T and 8 and a suitable flexible feeding inember. My improvedcontrolling mechanism, which is generally designated 9, is enclosed in acompartnient 10 arranged at the operators end ot the machine and at oneside thereof. This mechanism comprises a drum type controller member,generally designated 11, a series ot' stationary contacts generallydesignated l2 cooperating therewith, sets ot' contacts generallydesignated 13 and 14 carried by the controller l1 and operativerespectively during forward and reverse running of the motor, meansgenerally designated 15 for controlling the direction ofrotation of thedrum type controller 11, and means generally designated 16 forcontrolling the insertion and removal of a connector plug 17.

As the reverse segments and the resistance control segments are similarin arrangement, but disposed relatively o posite to each other on thecontroller mein er, it will sutiice to describe one set of thesemembers. In Fig. 2 the movable contacts used in reverse running aloneare shown. Sup orted upon suitable clamping members 20 a apted to besecured to a controller shaft 21 aie a series of arcuate control membersrespectively designated 22, 23, 24, 25, 26 and 27, the tirst of which isof such length as, after making contact, to remain in constant contactwith the stationary contact member with which it cooperates throughoutthe entire remaining turning movement in onedirection of the shaftl 21from its mid-position, While the contacts 23, 24, 25, 26 and 27 are setin spiral relation and progressively contact with and pass beyond thecooperating stationary contacts, the members 22 to 27 being connected inseries with each other. Located next to the member 27 and mountedsimilarly upon the shaft 21 are a series of herein, five reverse contactsegments, each of these being in length equal substantially to themember 22 and so disposed as to make contact with their respectivelycooperating stationary contacts simultaneously with the contacting ofthe member 22 with its stationary cooperating contact. These reversemembers are designated, respectively, 28, 29, 30, 31 and and areconnected as shown in the Wiring diagram of Fig. 7. It will be notedthat each of the several members 22 to 32 is insulated from the shaft 21by means of insulating material as is shown at 33. Pivotally mountedupon clamping members 34 secured to a stationary bar 35 but insulatedtherefrom by insulation 36, are a series of stationary contacts 37 to47, each of which is resiliently held in its extreme position toward thedrum controller by a spring 48 and limited as to its movement in thatdirection by a stud and nut 49. Flexible connectors 5() lead from thesestationary contacts to connector means 51 to which the variousconnections to the resistance, etc. are made. Suitable insulatedpartition members indicated at are supported by a rod 53 in such manneras to space the various members 22 to 32 and 37 to 47. Adjacent theoperators end of the shaft 21 is provided a disc-like member 54 having aflange 55 provided thereon and suitably serrated as indicated at 56 tocooperate with a spring actuated bell crank 57 to releasably lock thecontroller shaft in various positions. The bell crank 57 is held as toits upper end which is provided with a roller 58 in engagement with theflange 55 by means of a spring 59. The disc or collar member 54 isprovided between the opposite series of notches 45 with li pair ofprojecting abutment mein rs having faces disposed in oppositedirections, but, longitudinally staggered relative to the member 54 sothat only parte of their adjacent t'aces are actually opposite eachother. These abutment members which are designated, respectively, 61 and62 may be best ,:hserved in Figs. 2, 5 and 9 and it will be obvious fromthese facts that by reason gi the staggered relation of the members` 61and 62 it is possible for a rcooperating locking finger 63 to be movedto such posititllli` with respect to these abutment members as to permitrotation of the shaft 21 in eith ,r

direction while preventing rotation in e other, or to such position asto preyent rotation of the shaft 21 in both directions e K t'ii-elv. Thefinger 63 is carried upona Sha t 61 which is slidably mounted near theende of the members 61 and 62 in a suitable bearing 65. At its oppositeend the shaft 64 is is-@vided with a rack carrying member 66 wth whichthere meshes apinion 67 mount- ;-d upon the lower end ofa vertically'gposed manually controlled shaft 68. e latter is provided with arthumbnut 69 and, is movable to change the position of the matt 64 to* providefor forward or reverse running rotation of the drum operating` shaft 21.v

An indicator plate 70 surrounds the u per end of the shaft. 68 and isadjustably xed by slotted connections and screws 71 to the top of themachine frame and is likewise provided with stops 72 and 73 for limitingthe movement of the thumb nut in such man. ner as to provide for theroper positioning of the shaft 68 and so ot) the finger 63 for forwardor reverse runnin second shaft 74 provided with a pinion "iinterineshing with the pinion 67 coo r- :ztes by means of a flattenedportion 76 with a spring 77 and a lockin plunger 78 carried by thespring to interlock with a socket 79 in the connector plug 17, and torelease the connector plug when the parts are in the position shown inFig. 2, that is with the loi-king inger 63 in position toprevent'rotation of the shaft 2l in either direction. It will be notedthat as the thumb nut 69 is turned in opposite directions, the shaft 711will lil-ewise be turned and the member 77 so moved as to foi-ce theprojection 78 into the socket 79 and so prevent withdrawal of the plugexcept when the controller is not onliv in ott' position, but locked inofi' position.

The wiring diagrams shown in Fig. 7 will ineke it readily apparent howthe mechanism so tar described is connected. The stationian,

all)

ary contacts 37 to 47 will be noted in the center, with the main linewires connected to the buttons or contacts 37 and 47. The resistancewill be noted to lie between tlhe buttons 38 and 42 with suitableconnections between various points in the resistance and the severalbuttons. The button 43 will be noted to connect to one end of the serieslield, the button 44 to one of the brushes, the button 45 to the otherof the brushes; thc button 46 is connected to one end of the shunttield, whose other end is connected to the button 38, the shunt kickcoil shunts the buttons 38 and 46. The forward contacts 22 to will benoted at the lower side of the figure, it being noted that the contacts22 to are connected in series, that the contacts 28 and 29 are connectedtogether, and that the contacts 30, 3l and 32 are connected. Theoppositely moving or reverse running resistance controlling contacts 22to 27 will be noted to be connected similarly to the first ones. Thecontacts 28 and 30 are connected together and the contacts 29, 31 and32, are connected together. The effects of moving the shaft 2l inopposite directions are so obvious from the diagram that it is believedthat to increase the length of the speciiication by a detaileddescription of the various events as the arts are turned is unnecessary.

In Fig. 8 t e wiring diagram for a threephase A. C. motor is shown. Hereagain there are eleven stationary buttons, or contacts, 37 to 47.Instead, however, of having two series of movable contacts carried bythe shaft 2l, there are four series, two for forward running and two forreverse, these series being so arranged that the iii-st series cominginto engagement with the stationary buttons upon rotation of the shaft2l will connect the windings of the motor in star, while a continuedmovement bringing thc second series of movable contacts into operationwill result in the connection of the windings in delta. It is believedthat this description will be sufficient to render the operation of thedevice as modified for controlling an A. (l. motor obvious.

Before taking up the mode of operation of the parts of the controllerand its interlock, it should be noted that t-he member 54 is secured bya set screw 81 to the end of the shaft 2l and is provided at itsopposite end with a polygonal socket 82 with which a short operatingshaft 83 interloc-ks, the latter being provided at its opposite end withan operating wheel 84. Now assume that the parts are all in the positionindicated in Fig. 2 of the drawings. It will be evident that the rack 66is in such position as to bring the locking finger opposite thelongitudinal center of the member 54 and so as to be en- ;.aged by theadjacent ends of the members ol and (52 if rotation of the shaft 2l isattempted. It will accordingly be evident that the controller ispositively locked in mid-position. It will also be noted that by reasonof the relation between the pinions 67 and the sha 't 74 is in suchposition as to `bring the flattened portion To thereot jacent the springmember 77 and to per; i the latter, accordii` tlg', to withdraw thelockir pin 78,:1o that the conne" plug .may be withdrawn. il t? e the.1i ated in either ui controller thereby, iii the shaft o8 to be turnedin to more the member o3 longi t free the meting/ter .-l- 'tor rotaticuiin rection. -i unie t t the thumb nut. bt) is turnel in a cloelrwdirection. i. c. toward the legend LForwa on the ring TU. rIltis willcause the member bij to more tov."- rd the left in Fig'. L* and willfree tht 'f tali' rotation in a clockwise direc o` referring to Figs. 4and while prevent ng rotation thereof in the opposite direction. It.will thereupon be possible by turning the hand wheel 84 to cause thedrum operating shaft 2l to rotate and to connect the motor for forwardrunning and g l allv eut out the resistance from 'the circuit.. it willbe noted that the turninn of 'the shaft 68 has turned tlhe shaft T4 anothe pin 78 has been locked in place. It' the plug i7 happened to be outat the time that the shaft G8 was turned, it will be impossible toreplace it until all vthe parts had been moved bach to initial position,or, if in, it could not be removed. lt will also be apparent that theplug 'i7 must be shoved all the way home or else entirely removed, forotherwise the shaft 74 cannot be turned. This prevents movement of shafto8 except when thc plug is either fully in, or altogether out. lt willbe apparent that the shaft- 68 cannot be turned to reverse the positionof the locking linger until after the member 54 has been returned tomid-position, as the rim of the member would interfere with longitudinalmovement of the member 63. Upon reverse move-.nient of the shaft 68, itwill be evident that the shaft 2l can be rotated in the oppositedirection to that first described, but cannot be oppositely operated.From the foregoing description it will be clearly apparent that both thecontroller and the connector plug are under control of a locking meanswhich. when it releases the plug. locks the controller and vice versa.

lVhile I have in this application specilicall)Y described one form whichmy invention ma)Y assume in practice, it: will be understood that thisform o" 'the same is shown for purposes of illustration and that tlheinvention may be mcdilied and embodied in other forms oit the samewithout departing from its spirit or the scope of the appended claims.

that I claim as new and desire to secure by Letters Patent is:

l. In an electric controlling mechanism,

il can be ro-v a controller member movable in opposite directions from agiven position to produce different circuits, and means includingmovable means comprising only a single rectilincarly movable element forselectively controlling the direction in which said member may benio-ved.

2. In an electric controlling mechanism,

-a controller member movable in opposite` directions from a givenposition to produce different circuits, and means including a lnemberhaving a plurality of oli'set controlling surfaces movable with saidcontroller member and an abutment member for controlling the directionin which said controllirgmember may be` moved.

3. In an electric controlling mechanism, a controller member movable inopposite directions from a given position to produce different circuits,and means including members one of which is movable with said controllermember for holding the latter in said given position or freeing the samefor movements in said opposite directions, said means while permittinglmovement in one direction preventing,r movement in the oppositedirection, one of said members presenting oppositely dis osedoverlapping abutment surfaces and t e other an abut ment portion adaptedto cooperate vwith said surfaces.

4. In an electric controlling mechanism. a controller member movable inopposite directions from a given position to produce diierent circuits,and means including a member movable with said controller member and anabutment member rectilinear-ly movable longitudinally of said controllermember for controlling the direction in which said controller member maybe moved.

5. In an electric controlling mechanism, a controller, a connector plug,and means separate from each of the same for controlling the operationof the controller and the removal of said connector plug.

6. ln an electric controlling mechanism, a controller and operating`means therefor, a connector plug, and independently manually operablemeans for controlling the operation of said controllerand removal ofsaid plug.

7. In an electric controlling mechanism, a controller having .operatingmeans therefor, a connector plug, means whereby said controller ismovable to a plurality of successive positions while said plug is in anoperative position, and independently manually operable means forcontrolling the operation of said controller and movement ofsaid plugoperative in one adjusted position to permit operation of saidcontroller while preventing insertion or removal of the plug.

8. In an electric controlling mechanism,

imm

e controller ,having y.operating mmm 101', .a connector frills, andseparate 'milependntly maimluly OPOlzlll mms WWW trolling the operationof said controller t i movement of said iplqg operatiivein one,A justedposition ,to permit nioval of said ,plug 'While ,-lonking icon;trolleragainstcoperation. A A

9- ln anieleqtvic controlling mechanism a reversing switch, Wnnector pug, and

manually operable oontroll' `moans p@- rate .from eaclnof .the sameorcontmig the direction Ain .which saidi-rsversingswitn ot' thelplug.10. t man electric controlling mechanism, :1 reversing switch, aconnector plug means separately controlled r lockimaid reversing switchagainst `movement ineithr direction Vor for freeing it fonmovementfin'one oi-theiother directonmsaid means being operative alsoito controlsaidlplug.

11. Inanielectrlc controlling mocha a rotatable ,controller ada tedto bemov Plug, and maiiullyiccnttellsd www ole toloclsaid .controller againstrotatign while releasingaid.cinnecstm', lugando a' bili@ 1'.

106k -Seid iconnetor plus A"EY swing said controller. r

12. Iman electric controlling: .meh ,I a rotatable. controller a,dqptedJbe in opposite directions, ax p lease l erable `to lock said cpntrollgr,aganlhrqtw tion whilerreleasing said, oonnectr plug and to lock saidconnector plug whi e releasing said controller, saidmeansbeing operativeon opposite actuation thereof to runt, posite actuation of said controler wim locking oonnectorplug irrespective .of its direction .ofactuation.

13. Ina` controlling mechanism, a r

able drunnaml means for controlling rection of. rotation of said druminc riding@ member rotta/table With ,Saidk'llmnd hrl.' ing a pairofspaced oppositelyifacing wing` carried therebyLso disposedyasftoprovide a notch between `said wings with boulders ings. pair of spacedoppositely facing Wings carricd.t,hereby sodisposed as to provide a mon0r .mi

tor operating -the reversug .sante .and

in Opposite directions@ re welll@ @nectar @www plus, ad manuallyciiiitrdled,` means QP- fl?? notch between said wings with shouldersdisposed atP opposite endsl of said notch, a member lo tosaid notctudmllymovable .with respect t andvwigsiand adapted w ce W van... U e

millesimi nachlachnni ani-.amat muslims nu; ,E

operate therewith to control the direction of sai-d drum, and meansincluding arack, a rotatable pinion and means for rotating said pinionfor controlling said locking means.

15. In an electric circuit controlling mechanism, a plug operative whenremoved to open said circuit, a controller rotatable to make or breakthe circuit and means including a longitudinallyv movable shaftcooperating with said controller to control the operation thereof, and arotating shaft co operating with said plug to control insertion andremoval thereof, and common operating means for said shafts forinterlocking said connector plug and said controller.

16. In an electric controlling mechanism, a controller, a connectingplug, and independently operable means for controlling the movement ofsaid controller operative on movement to release the latter to firstlock the plug.

17. In an electric controlling mechanism, a controller, a connectingplug, and independently opera-ble interconnected controlling meanstherefor operative on movement to release said plug to first lock saidcontroller.

18. In an electric controlling mechanism, a controller, a connectingplug, and independently operable means for controlling said controllerand plug operative to prevent release of the former unless the latter isin full circuit closing position or totally removed.

19. In an electric controlling mechanism, a. controller, a connectingplug, and independently operable means for controlling said controllerand plug operative to prevent release of the former when the latter ispartially inserted.

20. In an electric controlling` mechanism, a controller n rmally movableto successive positions, and a connector plug, and controlling means forsaid controller and for said plug including an independentlyv movableelemert normally moif'able to effect re lease or loclnie' et either ofsaid devices as desired. i

21. In an electric controlling mechanism, a controller member movable inopposite directions from a given position, a connector plug', operativeconnections between said member and plug whereby one of the same isadapted to control the other, said connections including relativelymovable rack and pinion elements, and means whereby upon avpredeteri'niued relative movementthereof said member may moved in oneof said directions.

22. In an electric controlling 4mechanism, a controller member movablein opposite directions from a given position, a connector plug,operative connections between said member and plug whereby one of thesame is adapted to control the other, said connections includingrelatively movable rack and pinion elements, and means whereby one ofsaid relatively movable elements may have extreme positions andoperative to allow said controller to be moved in opposite directionswhen said positions are obtained.

In testimony whereof I aflx my signature.

CHARLES WV. WYMAN.

